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UNITED sTATEs PATENT oEEioE.

LOREN J. IVICKS, OF NEW YORK, N. Y.

METHOD 0F OPERATING GUIDE-ROLLERS ANI) FEED-CLAMPS IN SAWING-MAGHINES.

Speccaton of Letters Patent No. 11,708, dated September 19, 1854.

To all whom z'zf may concern Be it known that I, LoREN J. Wicks, of thecity, county, and State of New York, have invented a new and ImprovedSawing-Machine for resawing; and I do hereby declare that the followingis a full, clear, and exact description of the same, reference being hadto the annexed drawings, making a part of this specification, in whichWFigure 1, is a side elevation of my improved sawing machine. Fig. 2, isa plan or top view of the same. Fig. 3, is an under view of the guiderollers showing the segment racks and pinions whereby they are adjusted.Fig. 4, is a detached plan or top view of one pair of the feedingclamps.

Similar letters of reference indicate corresponding parts in the severalfigures.

This invention relates to a new and improved sawing machine forre-sawing, and consists in rendering the feed clamps and guide rollers,self adjustable by means of pinions and racks arranged as will bepresently shown and described.

To enable others skilled in the art to make and use my invention, I willproceed to describe its construction and operation.

A, represents the frame of rectangular forln, and having two uprights(a, a,) between which a saw sash, B, containing a saw, C, vibrates bymeans of a pitman, D, secured to the lower end of the sash, and apulley, E, at the lower part of the frame, A, see Fig. 1. The saw sashand saw are of the usual construction. Directly in front of the sawsash, B, there is a framev F, formed of twouprights (29,1%) connected attheir upper ends by a cross piece (c) the lower ends of the uprights (b,b) being secured to a cross piece the ends of which are att-ached tosills or plates (e, c) which are hinged or connected by joints (f, totheL top pieces of the frame, A, see Figs. 1, an 2.

G, G, are vert-ical guide rollers secured to the frame, F, by levers orarms, (g, g) the axes of the rollers passing through the outer ends ofthe arms or levers. The inner ends of the arms or levers are secured toupright shafts (7L, h) which t within the frame, F, the lower ends ofthe shafts underneath the lower cross piece (d) having arms (2', 2')attached to them at the ends of which arms are segment racks (j, j) seeFig. 3.

H, is a shaft underneath the cross piece (ci) and sills or plates, (e,e)4 said shaft having its bearings attached to the sills or plates (e,e). Upon this shaft are `the pinions, (la, 7c) which gear into thesegment racks (j, j) see Fig. 3. One-of the pinions (j) is secured tothe shaft I-I, by a screw nut (Z) so that said pinion may be loosenedwhen desired and be, allowed to turn independent of the shaft, H.

I, is a pulley at one end of the shaft, H, said pulley having a weight,J, attached to it as shown in Fig. 1.

The guide rollers are placed one at each side of the saw and near itstoothed edge.

K, K, are ways on the upper part of the frame A, between which ways twobeds or plates, L, L, fit.

M, is a toothed wheel upon a shaft, N, which is at one end of the frame,A. This toothed wheel gears into a pinion, O, hung on a shaft, P, saidshaft also having a cone of pulleys (m) upon it, around which a belt (n)passes, said belt also passing around a cone of pulleys, Q, on a shaft(g2-which has a pulley (o) at one end, said pulley (o) having a belt(79) which passes around the pulley (0) and the shaft (1 of the crankpulley E. On the shaft, P, are hung'two bent levers, R, R, the lowerarms of which fit in irregular circular grooves (r) in the sides of thetoothed wheel, M, see Fig. 1,-the groove in one side of the wheel beingin a reverse position to that in the opposite side. The roove nearestthe eye is shown in black, an the groove in the opposite side of thewheel is shown by red dotted lines. The upper arms of the levers, R, areconnected by rods (t, t) to the beds or plates, L, L, as shown by thedotted lines in Fig. 1.

On the upper surface of each bed or plate, L, there are two feedingclamps (u, u) of eccentric form and attached to small shafts (e, o)which pass through the beds or plates,

'L, and have pinions at their lower ends as shown by dotted lines inFig. 4, The pinions (er) gear into racks (w, ae) one to each bed orplate. See Figs. 2, and 4, and to each rack a cord (y) and weight (e) isattached. See Figs. 1 and 2 rIhe board or piece of timber to be resawedis placed between the two pairs of clamps (u) and motion being given thesaw, the two pairs of clamps, move reciprocally backward and forward,the two pairs approaching and then receding from' each other, one paironl bindingagainst the board or piece of tim er at a time, and

during its forward motion and feeding the board to the saw, the clampskeep the board This is owing to the connection between each pair ofclamps, by the rack and 'pinions which form a connection between the twoclamps of each pair and insure an equal bearing on each side of theboard or timber. The guide rollers, G, G, also bear equally each side ofthe board for the saine reason. The weight, J, causing the rollers tobear against the sides of the board.

In case a piece` of stuff is to be divided or cut into three or more'parts of equal thicknesses, the clamps at one side are thrown a littlefarther out as shown by the red lines in Fig. 4,-one of each pair ofclamps being made adjustable by means 0f a nut (a) one of the guiderollers is also thrown outward in a corresponding degree, see red linesFig. 3, by loosening one of the pinions (7c) by means of the screw nutBy Vthrowing the guide roller and clamps outward the center of the boardwill ybe thrown out of line with. the teeth of the saw, and the boardwill consequently be sawed into the desired number of parts.

By having the frame, I", secured by joints or hinges to the frame, A,the rollers may be thrown back from the saw, C, see red lines Fig. l,and thus allow the saw to be filed without taking it from the saw sash.

The feeding lclamps (10),*(10'), in consequence of thel grooves n theside of the wheel, M, do not both change their movement at the sametime. One moves a short distance before the other, so that the board tobe sawed, will have no cessation of movement upon the return motion ofthe clamps.

I do not cla-im the form of the feeding clamps, nor operating them by aneccentric, for they have been previously used and operated as hereinshown-'neitherl do I claim the guide rollers, fory they are in commonuse; but l f What I do claim as new and desire to secure by LettersPatent, is,

Connecting the two clamps, (u, u) of each pair together by means of theracks, (w, and pinions as herein shown, one clamp of each pair beingmade adjust-able, and connecting the guide rollers, G, G, together bykmeans .of the segment racks (j, j) and pinions (la, Ze) the rollers,racks, and pinions being secured or attached to a movable or jointedframe, F, substantially as shown.

' LoREN J. wiens.

Witnesses: y.

J. W. 000MB, O. D. MUNN.

